Audio mixing device



FIG. 1 is a front view of an “audio mixing device” in accordance withthe design;

FIG. 2 is a rear view of the design thereof;

FIG. 3 is a right side view of the design thereof;

FIG. 4 is a left side view of the design thereof;

FIG. 5 is a top view of the design thereof;

FIG. 6 is a bottom view of the design thereof; and,

FIG. 7 is a perspective view of the design thereof.

Any broken line illustration in the drawings is not part of the claimeddesign.

CLAIM The ornamental design for an audio mixing device, as shown anddescribed.